1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DanielleElmas [232]
3 years ago
12

What is the correct answer?

Mathematics
1 answer:
egoroff_w [7]3 years ago
4 0
X⁴ - 81  = x⁴ - 9² (Difference of 2 squares, then we an write it:


(x²-3)(x²+3) =0, → then (x²-3) = 0 and (x²+3)=0

(x²-3) = 0 → x² = 3 → x = +√3 and x = -√3
(x²+3) =0 → x² = -3 → x = +√-3  and x = -√3→ or  i√3 AND  x = -i√3

A{ -3 , +3 , -i√3 , i√3}

You might be interested in
How could you use the property to compute 2x8x2 mentally
Sveta_85 [38]
First you need to kbkw you 2x tables then you multiply 2x8=16x2=32 the best way to do it is to break ot down in your head say that you know that 2x2=4 then you do 4x8=32
8 0
3 years ago
Read 2 more answers
1 and 2 please and explain
baherus [9]
I'm sorry I don't know but you can use photomath you can just download it from the App
3 0
3 years ago
The main show tank has a radius of 60 feet and forms a quarter sphere where the bottom of the pool is spherical and the top of t
svetlana [45]

The given radius is = 60 feet

The volume of the sphere is given by = \frac{4}{3} \pi r^{3}

So we will find the volume of the sphere using radius as 60 and pi as 3.14

Volume = \frac{4}{3}*3.14*60*60*60 = 902059.20 cubic feet

As quarter of anything is defined as its one-fourth part, so here the volume of the quarter of sphere can be calculated by finding one fourth of the calculated volume.

So volume of quarter sphere = \frac{902059.20}{4}

= 225514.80 cubic feet

And rounding this to nearest whole number we get 225515 cubic feet as the answer.


3 0
3 years ago
To most closely estimate the difference below, would you round the numbers to the nearest ten thousand, the nearest thousand, or
zhannawk [14.2K]

Answer:

To most closely estimate the difference, I would round 62,980 to the nearest thousand, so it will be 63,000. That is because when rounding, 63,000 is large enough so that adding will be easy, and 62,980 is relatively close to 63,000.

I would round 49,625 to the nearest thousand, since it would make the subtraction easier and 49,625 is only 375 units away from 50,000.

63,000 - 50,000 = about 13,000.

Hope this helps!

6 0
3 years ago
Read 2 more answers
Write an equation of the line given.​
frozen [14]

Answer:

y = -3/4x + 1

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • What is the sum of ​ 4/15 + 8| 1/3 ​ ?
    5·1 answer
  • Doug got 8 out of 10 questions correct on a math quiz. If each question was worth the same number of points, and the test was wo
    6·2 answers
  • Y less than 21 write in expresion algebraic
    8·2 answers
  • A 2-column table has 7 rows. Column 1 is labeled Temperature (degrees Fahrenheit) with entries 0 to 20, 21 to 40, 41 to 60, 61 t
    14·2 answers
  • The height in feet, h, of a model rocket t seconds after launch is given by the equation h(t) = 3+70t - 16t^2. The average rate
    12·2 answers
  • Find the product. (m - 5)2
    8·2 answers
  • Which product is greater than 3/4?
    10·1 answer
  • 2x+7y=4 −2x−8y =−2 ​
    8·1 answer
  • A scale drawing of a kitchen is shown below. The scale is 1:20.
    9·1 answer
  • Find the measure of the arc or central angle indicated. Assume that lines which appear to be diameters are actual diameters. 7)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!